CN111059990B - Ball screw channel precision detection device and method - Google Patents
Ball screw channel precision detection device and method Download PDFInfo
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- CN111059990B CN111059990B CN201911356947.5A CN201911356947A CN111059990B CN 111059990 B CN111059990 B CN 111059990B CN 201911356947 A CN201911356947 A CN 201911356947A CN 111059990 B CN111059990 B CN 111059990B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
- G01B5/20—Measuring arrangements characterised by the use of mechanical techniques for measuring contours or curvatures
- G01B5/201—Measuring arrangements characterised by the use of mechanical techniques for measuring contours or curvatures for measuring roundness
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
- G01B21/02—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring length, width, or thickness
- G01B21/04—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring length, width, or thickness by measuring coordinates of points
- G01B21/042—Calibration or calibration artifacts
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- A Measuring Device Byusing Mechanical Method (AREA)
Abstract
The invention discloses a ball screw channel precision detection device, which comprises: a bottom plate, a pair of guide rails is arranged on the bottom plate; the measuring mechanism is arranged on the pair of guide rails in a sliding mode, the ball screw to be tested is located in the measuring mechanism, and the measuring mechanism is used for measuring the channel accuracy of the ball screw when the ball screw to be tested rotates; the fixed centre device and the movable centre device are arranged on the bottom plate; the fixed center device and the movable center device are respectively arranged at two ends of the pair of guide rails in the length direction, and the fixed center in the fixed center device and the movable center in the movable center device are respectively propped against two ends of the ball screw to be tested in the axial direction. The invention also discloses a method for measuring the precision detection quantity of the ball screw channel based on the ball screw channel precision detection device. The invention has the advantages of convenient operation, rapidness, labor saving and high stability.
Description
Technical Field
The invention relates to the technical field of ball screw detection, in particular to a ball screw channel precision detection device and method.
Background
Development and mass production of novel ball screw products; along with the gradual promotion of the requirements for the precision of the roller path and the diversification of the items, the traditional three-needle method is used for detection, the efficiency is low, the detection error of a single roller path reaches 3-5 um, the one-time sleeve matching rate of batch products is seriously influenced, the products are easily unqualified, the sleeve is disassembled and reassembled or even scrapped, the detected items are very limited, other comprehensive precisions of the roller path cannot be comprehensively evaluated, and the precision requirements of customers on the products cannot be met. The ball screw has a rolling way which is spiral and has a plurality of screw pitches, after the ball screw is assembled into a finished product, the screw and a nut move relatively and reciprocally to cover the whole rolling way, so that the precision of the rolling way is particularly required to completely meet the technical requirement, the precision consistency of each rolling way is good, and a professional instrument needs to be developed to comprehensively detect the precision of the ball screw. At present, no similar professional detection tool exists in the market.
Disclosure of Invention
The invention aims to solve one of the technical problems that: the device is used for detecting the comprehensive accuracy of the channel of the ball screw, such as the diameter size of the channel, the taper of a roller path from a starting end to a tail end, the roundness of a single-pitch roller path and the cylindricity of a full-pitch roller path.
The second technical problem to be solved by the present invention is: the method for detecting the accuracy of the ball screw channel based on the ball screw channel accuracy detection device is provided.
A ball screw channel accuracy detecting device as a first aspect of the present invention includes:
the bottom plate is provided with a pair of guide rails;
the measuring mechanism is arranged on the pair of guide rails in a sliding mode, the ball screw to be tested is located in the measuring mechanism, and the measuring mechanism is used for measuring the channel accuracy of the ball screw when the ball screw to be tested rotates;
the fixed centre device and the movable centre device are arranged on the bottom plate; the fixed center device and the movable center device are respectively arranged at two ends of the pair of guide rails in the length direction, and the fixed center in the fixed center device and the movable center in the movable center device are respectively propped against two ends of the ball screw to be tested in the axial direction.
In a preferred embodiment of the present invention, the fixed tip device further includes a fixed tip mounting seat, the fixed tip mounting seat is fixedly mounted on the bottom plate, and the fixed tip is fixed on the fixed tip mounting seat.
In a preferred embodiment of the present invention, the live center device further comprises a live center mounting seat, a live center fixing sleeve, a center built-in spring, a push-pull connecting rod, a handle pull rod, a pressing handle mechanism mounting seat, a handle pull rod sliding sleeve and a pressing handle, wherein the live center mounting seat and the pressing handle mechanism mounting seat are fixedly mounted on the bottom plate, and the live center mounting seat is located between the pressing handle mechanism mounting seat and the measuring mechanism; the movable center fixing sleeve is fixedly arranged on the movable center mounting seat, and the movable center is arranged in an inner hole of the movable center fixing sleeve in a sliding fit manner; two ends of the live center extend out of two ends of the live center fixing sleeve, an inner hole with one open end is formed in the live center, a spring arranged in the center is arranged in the inner hole of the live center, one end of the push-pull connecting rod is inserted into the inner hole of the live center, and the other end of the push-pull connecting rod is connected with one end of the handle pull rod through a coupler; the handle pull rod sliding sleeve is fixedly arranged on the installation seat of the compression handle mechanism, the other end of the handle pull rod penetrates through an inner hole of the handle pull rod sliding sleeve and is hinged with the compression handle, and the compression handle is also hinged with the handle pull rod sliding sleeve through a connecting rod mechanism; during detection, a pressing handle is pulled, the pressing handle drives a handle pull rod to move forwards in an axial direction, the handle pull rod drives a push-pull connecting rod to move forwards in the axial direction through a coupler, the push-pull connecting rod drives a movable center to move axially towards the direction of the ball screw to be tested through a built-in spring of the center, and the movable center is abutted against one end of the ball screw to be tested in the axial direction and loaded.
In a preferred embodiment of the invention, a waist-shaped hole is formed at the end of the push-pull connecting rod, which is located in the inner hole of the live center, a center pull rod limiting pin is arranged in the inner hole of the live center, and the center pull rod limiting pin is inserted into the waist-shaped hole and matched with the waist-shaped hole to limit the axial movement position of the push-pull connecting rod.
In a preferred embodiment of the present invention, the measuring mechanism includes an X-direction moving base slidably disposed on the pair of guide rails, a pair of Y-direction linear guide bases fixed on the X-direction moving base, Y-direction linear guides mounted on the respective Y-direction linear guide bases, and Y-direction sliders slidably disposed on the respective Y-direction linear guides; the test fixture comprises a first test head mounting block and a second test head mounting block, wherein the first test head mounting block is fixedly mounted on one Y-direction sliding block, the first test head mounting block is mounted on the other Y-direction sliding block, the opposite surfaces of the first test head mounting block and the second test head mounting block are respectively provided with a test head, and the test heads are matched with the channels of the ball screw to be tested; the dial gauge comprises a first measuring head mounting block, a second measuring head mounting block, a dial gauge head contact column, a dial gauge and dial gauge jumping data, wherein the first measuring head mounting block is provided with the dial gauge head contact column, the second measuring head mounting block is provided with the dial gauge, the dial gauge head of the dial gauge is abutted against the dial gauge head contact column during measurement, and the dial gauge jumping data is precision data of a ball screw channel to be tested during measurement.
In a preferred embodiment of the invention, a stop is mounted on each Y-direction linear guide base, and the stop is located on the outer side of the Y-direction slider and limits the outward moving position of the Y-direction slider.
In a preferred embodiment of the present invention, the probe is a cylindrical probe. Preferably a standard stick-type stylus.
In a preferred embodiment of the invention, a standard component placing station is arranged on the bottom plate, and the ball screw standard component is placed on the standard component placing station.
In a preferred embodiment of the invention, a plurality of feet are provided on the bottom surface of the base plate.
A method for measuring a ball screw channel accuracy detection amount based on the ball screw channel accuracy detection device as a second aspect of the present invention includes the steps of:
step 1: the method comprises the following steps that a ball screw standard part is used, the ball screw standard part is placed into a measuring mechanism, two ends of the ball screw standard part in the axial direction are supported by a fixed center and a movable center, two standard rod-shaped measuring heads in the measuring mechanism are moved into a channel of the ball screw standard part, the measuring mechanism is moved in a reciprocating mode to enable a dial indicator value on the measuring mechanism to be stable, and then standard data are corrected to the ball screw standard part value; taking down the ball screw standard part after calibration;
step 2: cleaning the grinded ball screw to be tested, putting the ball screw into a measuring mechanism, and propping and fixing two ends of the ball screw to be tested in the axial direction by using a fixed center and a movable center;
and step 3: placing two standard rod-shaped measuring heads in a measuring structure into a first channel of a ball screw to be tested, wherein the normal sequence is from left to right;
and 4, step 4: rotating the ball screw to be tested for measurement, wherein two standard rod-shaped measuring heads in the measuring mechanism can move from a first channel to a last channel of the ball screw to be tested; in the measuring process, the numerical value of the dial indicator is observed and is an actual measurement value, the actual measurement value is compared with the nominal value of the drawing of the ball screw to be tested, and the difference value is the size deviation.
In a preferred embodiment of the present invention, in step 4, the ball screw to be tested may be rotated back and forth so that the measuring mechanism reciprocates to observe the stability.
In a preferred embodiment of the invention, the ball screw to be tested rotates 360 degrees, the dial indicator directly displays the size variation, and the difference value between the maximum value and the minimum value is the roundness of a single thread pitch of the ball screw to be tested.
In a preferred embodiment of the invention, the ball screw to be tested rotates, and after the testing mechanism finishes walking, the dial indicator displays that the difference between the maximum value and the minimum value is the full-pitch cylindricity of the ball screw to be tested.
According to the invention, the ball screw is fixed on the measuring mechanism through the double tips at the two ends, the two standard rod-shaped measuring heads (the size of the standard rod-shaped measuring heads is matched with the product model) in the measuring mechanism clamp the channel of the ball screw to be tested to effectively contact and are self-balanced with the helical angle of the ball screw to be tested, the ball screw to be tested is rotated, the measuring mechanism is enabled to move back and forth along the X direction, and the channel size and the related precision of the ball screw to be tested are measured.
Due to the adoption of the technical scheme, compared with the prior art, the invention has the following advantages: the method can be used for detecting the comprehensive precision of the channel of the ball screw, such as the diameter size of the channel, the taper of the raceway from the starting end to the tail end, the roundness of the single-pitch raceway and the cylindricity of the full-pitch raceway. In practical application, the tool precision and the installation mode are not high in requirement, and the tool is convenient to operate, and good in stability and consistency. The invention also has the advantages of convenient operation, rapidness, labor saving and high stability.
Drawings
Fig. 1 is a perspective view of a ball screw channel accuracy detecting apparatus according to the present invention.
Fig. 2 is a front view of the ball screw channel accuracy detecting apparatus of the present invention.
Fig. 3 is a left side view of fig. 2.
Fig. 4 is a right side view of fig. 2.
Fig. 5 is a top view of fig. 2.
Fig. 6 is a sectional view a-a of fig. 5.
Fig. 7 is a sectional view B-B of fig. 5.
Fig. 8 is a schematic structural view of a live center device in the ball screw channel accuracy detecting device according to the present invention.
Fig. 9 is a schematic view showing the installation of a standard rod-type gauge head in the ball screw channel accuracy detecting apparatus according to the present invention.
Fig. 10 is a schematic view of a state in which the ball screw channel accuracy detecting apparatus of the present invention tests a screw to be tested.
Detailed Description
The invention is further described below in conjunction with the appended drawings and detailed description.
Referring to fig. 1 to 9, a ball screw channel accuracy detecting apparatus shown in the drawings includes a base plate 100, and a pair of guide rails 110 are provided on a right half portion of the base plate 100 shown in fig. 1. A plurality of legs 120 are provided on the bottom surface of the base plate 100. In addition, a standard component placing station 130 is installed on the base plate 100, and a ball screw standard component a is placed on the standard component placing station 130.
A measuring mechanism 200 is slidably disposed on the pair of guide rails 110, and referring to fig. 10, the ball screw 300 to be tested is put into the measuring mechanism 200, and the measuring mechanism 200 measures the channel accuracy of the ball screw 300 to be tested when the ball screw 300 to be tested rotates.
The fixed center device 400 and the live center device 500 are mounted on the bottom plate 100, the fixed center device 400 and the live center device 500 are respectively arranged at two ends of the pair of guide rails 110 in the length direction, the fixed center 410 in the fixed center device 400 and the live center 510 in the live center device 500 are respectively abutted against two ends of the ball screw 300 to be tested in the axial direction, and loading is carried out through the live center 510 in the live center device 500.
The fixed tip assembly 400 further comprises a fixed tip mount 420, the fixed tip mount 420 is fixedly mounted on the base plate 100 using fasteners, and the fixed tip 410 is fixed to the fixed tip mount 420.
The live center device 500 further comprises a live center mounting seat 520, a live center fixing sleeve 540, a center built-in spring 550, a push-pull connecting rod 560, a handle pull rod 570, a pressing handle mechanism mounting seat 580, a handle pull rod sliding sleeve 590 and a pressing handle 501. The live center mount 520 and the compression handle mechanism mount 580 are fixedly mounted on the base plate 100, with the live center mount 520 being located between the compression handle mechanism mount 580 and the measurement mechanism 200.
Referring specifically to fig. 8, the live center fixing sleeve 540 is fixedly mounted on the live center mounting seat 520, and the live center 510 is disposed in the inner bore 541 of the live center fixing sleeve 540 in a sliding fit manner. Two ends of the live center 510 extend out of two ends of the live center fixing sleeve 540, wherein the center 511 of the live center 510 is opposite to and on the same axis as the center 411 of the fixed center 410.
An inner bore 512 is provided in the live center 510 with an opening at one end, and the center innerspring 550 is disposed in the inner bore 512 of the live center 510 on the side of the inner bore 512 adjacent to the center 511.
One end of the push-pull connecting rod 560 is inserted into the inner hole 512 of the live center 510 from the open end of the inner hole 512, a waist-shaped hole 561 is formed in the end, located in the inner hole 512 of the live center 510, of the push-pull connecting rod 560, an apex pull rod limiting pin 513 is arranged in the inner hole 512 of the live center 510, and the apex pull rod limiting pin 513 is inserted into the waist-shaped hole 561 and is matched with the waist-shaped hole 561 to limit the axial moving position of the push-pull connecting rod 560.
The other end of the push-pull rod 560 extends out of the inner hole 512 and is connected to one end of the handle pull rod 570 by a coupler 571.
The handle pull rod sliding sleeve 590 is fixedly installed on the pressing handle mechanism installation seat 580, the other end of the handle pull rod 570 penetrates through an inner hole 591 of the handle pull rod sliding sleeve 590 and is hinged with the pressing handle 501, the pressing handle 501 is further hinged with the handle pull rod sliding sleeve 590 through a link mechanism 502, therefore, when the pressing handle 501 is pulled during detection, the pressing handle 501 can drive the handle pull rod 570 to move forwards in an axial direction, the handle pull rod 570 drives the push-pull connecting rod 560 to move forwards in the axial direction through a coupler 571, and the push-pull connecting rod 560 drives the movable center 510 to move axially towards the ball screw shaft 300 to be tested through the center built-in spring 550, and the movable center is abutted against one end of the ball screw shaft 300 to be tested and.
The measuring mechanism 200 includes an X-direction moving base 210 slidably disposed on the pair of guide rails 110, a pair of Y-direction linear guide bases 220 and 220a fixed to the X-direction moving base 210, Y-direction linear guides 230 and 230a attached to the respective Y-direction linear guide bases 220 and 220a, and Y-direction sliders 240 and 240a slidably disposed on the respective Y-direction linear guides 230 and 230 a.
The measuring mechanism 200 further comprises a first measuring head mounting block 250 fixedly mounted on one Y-direction slide block 240 and a first measuring head mounting block 250a mounted on the other Y-direction slide block 240a, wherein one measuring head 260, 260a is respectively mounted on the opposite surfaces 251, 251a of the first measuring head mounting block 250 and the second measuring head mounting block 250a, and the measuring heads 260, 260a are matched with the channel of the ball screw 300 to be tested; the probes 260, 260a are cylindrical probes. Preferably a standard stick-type stylus.
In addition, a micrometer head contact column 270 is installed on the first measuring head installation block 250, a digital display dial indicator 280 is installed on the second measuring head installation block 250a, during measurement, a gauge head 281 of the digital display dial indicator 280 abuts against the micrometer head contact column 270, and during measurement, jumping data of the digital display dial indicator 280 are precision data of the ball screw 300 channel to be tested.
A stopper 290, 290a is installed on each of the Y-direction linear guide bases 220, 220a, and the stopper 290, 290a is located at an outer side of the Y-direction slider 240, 240a to define a position where the Y-direction slider 240, 240a moves outward.
The method for measuring the ball screw channel precision detection quantity by using the ball screw channel precision detection device comprises the following steps:
step 1: using a ball screw standard component A, putting the ball screw standard component A into the measuring mechanism 200, propping two ends of the ball screw standard component A in the axial direction by using a fixed center 410 and a movable center 510, moving two standard rod-shaped measuring heads 260 and 260a in the measuring mechanism 200 into a channel of the ball screw standard component A, and calibrating standard data to the value of the ball screw standard component A after stabilizing the value of a digital display dial indicator 280 on the measuring mechanism 200 by moving the measuring mechanism 200 back and forth; taking down the ball screw standard part A after calibration;
step 2: cleaning the grinded ball screw 300 to be tested, placing the ball screw into the measuring mechanism 200, and supporting two ends of the ball screw 300 to be tested in the axial direction by using a fixed center 410 and a movable center 510 and fixing the movable center 510;
and step 3: placing two standard rod-type probes 260, 260a in the measurement structure 200 into a first channel of the ball screw 300 to be tested, in a normal sequence from left to right;
and 4, step 4: the ball screw 300 to be tested is rotated to carry out measurement, and the two standard rod-shaped measuring heads 260 and 260a in the measuring mechanism 200 move from the first channel to the last channel of the ball screw 300 to be tested; in the measuring process, the numerical value of the digital display dial indicator 280 is observed, the numerical value of the digital display dial indicator 280 is an actual measurement value, the actual measurement value is compared with the nominal value of the drawing of the ball screw 300 to be tested, and the difference value is the size deviation.
In the step 4, the ball screw to be tested can be rotated in a reciprocating manner, so that the measuring mechanism can reciprocate to observe the stability.
In the test, the ball screw 300 to be tested is rotated by 360 degrees, the digital display dial indicator 280 can directly display the size variation, and the difference value between the maximum value and the minimum value is the roundness of a single thread pitch of the ball screw 300 to be tested.
During the test, the ball screw 300 to be tested rotates, the testing mechanism 200 finishes walking, and the digital display dial gauge 280 displays that the difference between the maximum value and the minimum value is the full-pitch cylindricity of the ball screw to be tested.
Claims (12)
1. A ball screw channel accuracy detecting device, characterized by comprising:
the bottom plate is provided with a pair of guide rails;
the measuring mechanism is arranged on the pair of guide rails in a sliding mode, a ball screw to be tested is located in the measuring mechanism, and the measuring mechanism is used for measuring the channel accuracy of the ball screw when the ball screw to be tested rotates;
the fixed centre device and the movable centre device are arranged on the bottom plate; the fixed center device and the movable center device are respectively arranged at two ends of the pair of guide rails in the length direction, and the fixed center in the fixed center device and the movable center in the movable center device are respectively propped against two ends of the ball screw to be tested in the axial direction; the fixed center device further comprises a fixed center mounting seat, the fixed center mounting seat is fixedly mounted on the bottom plate, and the fixed center is fixed on the fixed center mounting seat;
the movable center device further comprises a movable center mounting seat, a movable center fixing sleeve, a center built-in spring, a push-pull connecting rod, a handle pull rod, a pressing handle mechanism mounting seat, a handle pull rod sliding sleeve and a pressing handle, the movable center mounting seat and the pressing handle mechanism mounting seat are fixedly mounted on the bottom plate, and the movable center mounting seat is located between the pressing handle mechanism mounting seat and the measuring mechanism; the movable center fixing sleeve is fixedly arranged on the movable center mounting seat, and the movable center is arranged in an inner hole of the movable center fixing sleeve in a sliding fit manner; two ends of the live center extend out of two ends of the live center fixing sleeve, an inner hole with one open end is formed in the live center, a spring arranged in the center is arranged in the inner hole of the live center, one end of the push-pull connecting rod is inserted into the inner hole of the live center, and the other end of the push-pull connecting rod is connected with one end of the handle pull rod through a coupler; the handle pull rod sliding sleeve is fixedly arranged on the installation seat of the compression handle mechanism, the other end of the handle pull rod penetrates through an inner hole of the handle pull rod sliding sleeve and is hinged with the compression handle, and the compression handle is also hinged with the handle pull rod sliding sleeve through a connecting rod mechanism; during detection, a pressing handle is pulled, the pressing handle drives a handle pull rod to move forwards in an axial direction, the handle pull rod drives a push-pull connecting rod to move forwards in the axial direction through a coupler, the push-pull connecting rod drives a movable center to move axially towards the direction of the ball screw to be tested through a built-in spring of the center, and the movable center is abutted against one end of the ball screw to be tested in the axial direction and loaded.
2. The ball screw channel accuracy detection device according to claim 1, wherein a waist-shaped hole is formed at the end of the push-pull connecting rod located in the inner hole of the live center, a tip pull rod limiting pin is arranged in the inner hole of the live center, and the tip pull rod limiting pin is inserted into the waist-shaped hole and is matched with the waist-shaped hole to limit the axial movement position of the push-pull connecting rod.
3. The apparatus according to claim 1, wherein the measuring mechanism comprises an X-direction moving base slidably disposed on the pair of guide rails, a pair of Y-direction linear guide bases fixed to the X-direction moving base, a Y-direction linear guide mounted on each of the Y-direction linear guide bases, and a Y-direction slider slidably disposed on each of the Y-direction linear guide; the test fixture comprises a first test head mounting block and a second test head mounting block, wherein the first test head mounting block is fixedly mounted on one Y-direction sliding block, the first test head mounting block is mounted on the other Y-direction sliding block, the opposite surfaces of the first test head mounting block and the second test head mounting block are respectively provided with a test head, and the test heads are matched with the channels of the ball screw to be tested; the dial gauge comprises a first measuring head mounting block, a second measuring head mounting block, a dial gauge head contact column, a dial gauge and dial gauge jumping data, wherein the first measuring head mounting block is provided with the dial gauge head contact column, the second measuring head mounting block is provided with the dial gauge, the dial gauge head of the dial gauge is abutted against the dial gauge head contact column during measurement, and the dial gauge jumping data is precision data of a ball screw channel to be tested during measurement.
4. The apparatus for detecting the accuracy of a ball screw channel according to claim 3, wherein a stopper is installed on each of the bases of the Y-direction linear guides, and the stopper is located on an outer side of the Y-direction slider to limit a position of the Y-direction slider to move outward.
5. The ball screw channel accuracy detecting device according to claim 3, wherein said probe is a cylindrical probe.
6. The ball screw channel accuracy measuring device according to claim 3, wherein said probe is a standard rod-type probe.
7. The apparatus for detecting the accuracy of a ball screw channel according to claim 1, wherein a standard component placing station is installed on the base plate, and a ball screw standard component is placed on the standard component placing station.
8. The apparatus for detecting accuracy of a ball screw channel according to claim 1, wherein a plurality of legs are provided on a bottom surface of the base plate.
9. A method for measuring a ball screw channel accuracy detection amount by using the ball screw channel accuracy detection device according to any one of claims 1 to 8, comprising the steps of:
step 1: the method comprises the following steps that a ball screw standard part is used, the ball screw standard part is placed into a measuring mechanism, two ends of the ball screw standard part in the axial direction are supported by a fixed center and a movable center, two standard rod-shaped measuring heads in the measuring mechanism are moved into a channel of the ball screw standard part, the measuring mechanism is moved in a reciprocating mode to enable a dial indicator value on the measuring mechanism to be stable, and then standard data are corrected to the ball screw standard part value; taking down the ball screw standard part after calibration;
step 2: cleaning the grinded ball screw to be tested, putting the ball screw into a measuring mechanism, and propping and fixing two ends of the ball screw to be tested in the axial direction by using a fixed center and a movable center;
and step 3: placing two standard rod-shaped measuring heads in a measuring structure into a first channel of a ball screw to be tested, wherein the normal sequence is from left to right;
and 4, step 4: rotating the ball screw to be tested for measurement, wherein two standard rod-shaped measuring heads in the measuring mechanism can move from a first channel to a last channel of the ball screw to be tested; in the measuring process, the numerical value of the dial indicator is observed and is an actual measurement value, the actual measurement value is compared with the nominal value of the drawing of the ball screw to be tested, and the difference value is the size deviation.
10. The method of claim 9, wherein in step 4, the ball screw to be tested can be rotated back and forth to reciprocate the measuring mechanism to observe stability.
11. The method of claim 9, wherein the ball screw to be tested is rotated 360 °, the dial indicator directly displays the change in size, and the difference between the maximum value and the minimum value is the roundness of a single pitch of the ball screw to be tested.
12. The method of claim 9, wherein the ball screw to be tested is rotated, and after the testing mechanism is moved, the dial indicator displays that the difference between the maximum value and the minimum value of the values is the full-pitch cylindricity of the ball screw to be tested.
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| CN113446921A (en) * | 2021-05-28 | 2021-09-28 | 启东锦桥轴承有限公司 | Device for testing distance from ball channel of ball nut with flange to inner side of flange face |
| CN114459413A (en) * | 2022-02-10 | 2022-05-10 | 慈兴集团有限公司 | Lead screw comprehensive measurement method |
| CN117740365B (en) * | 2024-02-21 | 2024-04-23 | 昆山奥德鲁自动化技术有限公司 | Screw assembly detection equipment |
| CN118032343B (en) * | 2024-04-12 | 2024-06-18 | 常州富丽康精密机械有限公司 | Raceway precision synchronous detection equipment based on multi-lead screw continuous feeding |
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